Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 181, NWS Cleveland, OH

September 7, 2012Portage County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 7, 2012, 4:49 PM EDT for Portage County, Ohio. It was in force for 56 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 7, 2012, 4:49 PM EDT (20:49 UTC)
Expired
Sep 7, 2012, 5:45 PM EDT
In force
56 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Portage County, OH

The radar

The Cleveland radar (KCLE), 57 km from the middle of the area, began a volume at 20:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Sep 7, 4:55 PM EDTTSTM WND DMGRavenna, OHA FEW TREES AND A COUPLE OF LIMBS DOWN IN THE RAVENNA AREA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 7, 3:22 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.8 hours before the alert went out and 130 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2012-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1010 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2012-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1010 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1160 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

551 
WUUS51 KCLE 072049
SVRCLE
OHC133-072145-
/O.NEW.KCLE.SV.W.0181.120907T2049Z-120907T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
449 PM EDT FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PORTAGE COUNTY IN NORTHEAST OHIO

* UNTIL 545 PM EDT

* AT 445 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  KENT...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RAVENNA...
  MANTUA...
  GARRETTSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE NOW AND STAY AWAY FROM
WINDOWS.

&&

PLEASE REPORT HAIL AND STRONG WINDS TO THE NATIONAL WEATHER SERVICE
BY CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4134 8139 4134 8100 4099 8100 4099 8139
TIME...MOT...LOC 2049Z 255DEG 20KT 4110 8132

$$

LAPLANTE
2 follow-up statements
304 
WWUS51 KCLE 072110
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
510 PM EDT FRI SEP 7 2012

OHC133-072145-
/O.CON.KCLE.SV.W.0181.000000T0000Z-120907T2145Z/
PORTAGE OH-
510 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR PORTAGE COUNTY...

AT 506 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR RAVENNA...MOVING EAST AT 20 MPH.

THREE QUARTER INCH HAIL HAS BEEN REPORTED WITH THIS STORM IN KENT.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
EDINBURG...WAYLAND...GARRETTSVILLE AND WINDHAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHEASTERN OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4100 8100 4099 8111 4108 8126 4115 8139
      4134 8139 4134 8100
TIME...MOT...LOC 2108Z 252DEG 15KT 4113 8122

$$

LAPLANTE
190 
WWUS51 KCLE 072142
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
542 PM EDT FRI SEP 7 2012

OHC133-072151-
/O.EXP.KCLE.SV.W.0181.000000T0000Z-120907T2145Z/
PORTAGE OH-
542 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR PORTAGE COUNTY EXPIRES AT 545
PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

ADDITIONAL THUNDERSTORMS MAY MOVE THROUGH THE AREA IN THE NEXT HOUR.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHEASTERN OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4100 8100 4099 8111 4108 8126 4115 8139
      4134 8139 4134 8100
TIME...MOT...LOC 2141Z 252DEG 15KT 4117 8105

$$

LAPLANTE

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 7, 2:12 PM EDTSevere Thunderstorm WarningCLECuyahoga, Medina, Summit48 min
Sep 7, 2:17 PM EDTSevere Thunderstorm WarningCLEHancock, Wood58 min
Sep 7, 2:51 PM EDTSevere Thunderstorm WarningCLECrawford, Huron, Seneca54 min
Sep 7, 3:13 PM EDTSevere Thunderstorm WarningCLECrawford, Marion, Wyandot62 min
Sep 7, 3:18 PM EDTSevere Thunderstorm WarningCLEErie, Huron57 min
Sep 7, 3:28 PM EDTSpecial Marine WarningCLE77 min
Sep 7, 3:44 PM EDTSevere Thunderstorm WarningCLECrawford, Huron, Seneca19 min
Sep 7, 4:26 PM EDTGale WarningCLE23 hr
Sep 7, 4:29 PM EDTSevere Thunderstorm WarningCLESummit46 min
Sep 7, 4:46 PM EDTSevere Thunderstorm WarningCLEMedina29 min
Sep 7, 5:52 PM EDTSevere Thunderstorm WarningCLEMahoning, Portage, Stark, Trumbull53 min
Sep 7, 6:26 PM EDTAreal Flood AdvisoryCLEMahoning, Trumbull81 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2012Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.